Set up a cron job in Linux to call script at every 15 minute.
You can use your favorite text editor to open the file:
$ vim /etc/crontab
If your script name is
/home/theuser/script.sh, add the following line to the end of the file to make it run in every 15 minutes:
*/15 * * * * /home/theuser/script.sh
*/15 sets the running “at every 15 minutes”.